| HAL : in2p3-00454412, version 1 |
| Code Bibliographique ADS : 2009A&A...499..653B |
| DOI : 10.1051/0004-6361/200911847 |
| Fiche détaillée | Récupérer au format |
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| Astronomy and Astrophysics 499 (2009) 653-660 |
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| The core-collapse rate from the Supernova Legacy Survey |
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| SNLS Collaboration(s) |
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| (06/2009) |
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| We use three years of data from the Supernova Legacy Survey (SNLS) to study the general properties of core-collapse and type Ia supernovae. This is the first such study using the "rolling search" technique which guarantees well-sampled SNLS light curves and good efficiency for supernovae brighter than i'~24. Using host photometric redshifts, we measure the supernova absolute magnitude distribution down to luminosities 4.5 mag fainter than normal SNIa. Using spectroscopy and light-curve fitting to discriminate against SNIa, we find a sample of 117 core-collapse supernova candidates with redshifts z < 0.4 (median redshift of 0.29) and measure their rate to be larger than the type Ia supernova rate by a factor 4.5±0.8(stat.)±0.6 (sys.). This corresponds to a core-collapse rate at z = 0.3 of [ 1.42±0.3(stat.)±0.3(sys.)] ×10-4 yr-1(h_70-1 Mpc)-3. |
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| APC - Cosmologie et Gravitation |
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| Thème(s) | : | Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique Physique/Astrophysique/Cosmologie et astrophysique extra-galactique |
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| supernovae: general – stars: evolution – surveys |
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| Liste des fichiers attachés à ce document : | |||||
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| in2p3-00454412, version 1 | |
| http://hal.in2p3.fr/in2p3-00454412 | |
| oai:hal.in2p3.fr:in2p3-00454412 | |
| Contributeur : Laurent Le Guillou | |
| Soumis le : Lundi 8 Février 2010, 15:04:07 | |
| Dernière modification le : Mardi 26 Juin 2012, 18:23:30 | |